I have a folder where my untagged music is where I want to launch a script to delete all the .png and .jpg except those beginning by the word 'cover'. Here's what I tried:
find . -name '*.jpg' -or -name '*.png' -not - -name 'cover.*'
find . (-name '*.jpg' -or -name '*.png'\) -not - -name '*.png'
And other variation of the two, none worked. (I didn't included the -delete at the end on purpose)